PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/01/14-21:13:10
G01     221.2          11.8               11.1 +/-    2.31      29.8 +/-    2.31  0.030 / 0.030
G03     260.8          70.5                6.7 +/-    0.70       7.1 +/-    0.70  0.030 / 0.030
G09     298.3          11.6               -6.6 +/-   29.76     -17.8 +/-   29.76  0.040 / 0.040
G14     93.0           20.0                8.0 +/-    2.03      17.7 +/-    2.03  0.040 / 0.060
G16     142.6          51.5               13.2 +/-    0.56      16.3 +/-    0.56  0.190 / 0.210
G22     202.6          63.9                7.8 +/-    0.61       8.6 +/-    0.61  0.190 / 0.290
G23     313.1          42.9                7.9 +/-    0.92      11.0 +/-    0.92  0.120 / 0.210
G26     84.2           54.7                9.9 +/-    0.72      11.9 +/-    0.72  0.090 / 0.130
G31     48.1           26.5                4.1 +/-    2.27       7.6 +/-    2.27  0.110 / 0.310